Here we attempt to provide useful code to generate figures from WRF outputs based on known galleries. For instance, NCL and WRF-Python provides extensive examples for plotting WRF outputs. Therefore, we aim to replicate some of these. Our approach to read wrfout files is based on eixport which relies r packages with GDAL bindings such as raster and stars. We do not try to provide a full gallery, instead, some basics and necessary plots to inspire other R used and receive more examples so share with the community.

packages

  • eixport read and manipulate wrf files.
  • raster for gridded and raster data.
  • stars for gridded and raster data.
  • cptcity colour palettes.
  • sf for spatial vector data.
library(eixport)
library(raster)
#> Loading required package: sp
library(stars)
#> Loading required package: abind
#> Loading required package: sf
#> Linking to GEOS 3.9.0, GDAL 3.2.2, PROJ 7.2.1
library(cptcity)
library(sf)

Based on NCL:

First lets get a summary of a WRF output file

wrfo <- "/media/sergio/ext41/wrfo_sebrazil/wrfout_d02_2014-11-03_000000"
(dt <- wrf_meta(wrfo)$vars)
#> Warning in rbind(c(FieldType = "104", MemoryOrder = "XYZ", description =
#> "Aerosol Optical Depth", : number of columns of result is not a multiple of
#> vector length (arg 158)
#>                      vars FieldType MemoryOrder
#> 110                   ac0       104         XYZ
#> 148                 ac0cw       104         XYZ
#> 227              ACGRDFLX       104         XY 
#> 299                 ACHFX       104         XY 
#> 300                 ACLHF       104         XY 
#> 60                   aco3       104         XYZ
#> 228                ACSNOM       104         XY 
#> 289                ALBBCK       104         XY 
#> 287                ALBEDO       104         XY 
#> 39                    ald       104         XYZ
#> 106                 antha       104         XYZ
#> 144                anthcw       104         XYZ
#> 1                 AOD_OUT       104         XYZ
#> 2               AOD2D_OUT       104         XY 
#> 24                   ASOA       104         XYZ
#> 3              ATOP2D_OUT       104         XY 
#> 23                   BSOA       104         XYZ
#> 312                   C1F       104         Z  
#> 310                   C1H       104         Z  
#> 313                   C2F       104         Z  
#> 311                   C2H       104         Z  
#> 316                   C3F       104         Z  
#> 314                   C3H       104         Z  
#> 317                   C4F       104         Z  
#> 315                   C4H       104         Z  
#> 231                CANWAT       104         XY 
#> 201                   CF1       104         0  
#> 202                   CF2       104         0  
#> 203                   CF3       104         0  
#> 187                   CFN       104         0  
#> 188                  CFN1       104         0  
#> 83                   clai       104         XYZ
#> 82                   claj       104         XYZ
#> 288                  CLAT       104         XY 
#> 121                 clcwi       104         XYZ
#> 120                 clcwj       104         XYZ
#> 278                CLDFRA       104         XYZ
#> 6                 CLDFRA2       104         XYZ
#> 152                 CN2O5       104         XYZ
#> 54                     co       104         XYZ
#> 111                  corn       104         XYZ
#> 149                corncw       104         XYZ
#> 260              COSALPHA       104         XY 
#> 233                COSZEN       104         XY 
#> 69                    csl       104         XYZ
#> 67                    dcb       104         XYZ
#> 25                  DMS_0       104         XY 
#> 186                    DN       104         Z  
#> 185                   DNW       104         Z  
#> 14           DRY_DEP_FLUX       104         XYZ
#> 13            DRY_DEP_LEN       104         XYZ
#> 12              DRYDEPVEL       104         XY 
#> 19                dvel_o3       104         XYZ
#> 161                   DZS       104         Z  
#> 258                     E       104         XY 
#> 17               EBIO_API       104         XY 
#> 16               EBIO_ISO       104         XY 
#> 141                 eccwi       104         XYZ
#> 140                 eccwj       104         XYZ
#> 103                   eci       104         XYZ
#> 102                   ecj       104         XYZ
#> 236                EDMF_A       104         XYZ
#> 240              EDMF_ENT       104         XYZ
#> 241               EDMF_QC       104         XYZ
#> 239               EDMF_QT       104         XYZ
#> 238              EDMF_THL       104         XYZ
#> 237                EDMF_W       104         XYZ
#> 246                EL_PBL       104         XYZ
#> 290                 EMISS       104         XY 
#> 53                    eth       104         XYZ
#> 8                EVAPPROD       104         XYZ
#> 257                     F       104         XY 
#> 181                   FNM       104         Z  
#> 182                   FNP       104         Z  
#> 151               GAMN2O5       104         XYZ
#> 280                   GLW       104         XY 
#> 65                    gly       104         XYZ
#> 276             GRAUPELNC       104         XY 
#> 226                GRDFLX       104         XY 
#> 38                   h2o2       104         XYZ
#> 277                HAILNC       104         XY 
#> 50                    hc3       104         XYZ
#> 51                    hc5       104         XYZ
#> 52                    hc8       104         XYZ
#> 40                   hcho       104         XYZ
#> 71                    hcl       104         XYZ
#> 296                   HFX       104         XY 
#> 170             HFX_FORCE       104         0  
#> 173        HFX_FORCE_TEND       104         0  
#> 261                   HGT       104         XY 
#> 37                   hno3       104         XYZ
#> 63                   hno4       104         XYZ
#> 72                     ho       104         XYZ
#> 73                    ho2       104         XYZ
#> 62                   hono       104         XYZ
#> 4                ICN_DIAG       104         XYZ
#> 306 ISEEDARR_RAND_PERTURB       106         Z  
#> 305        ISEEDARR_SKEBS       106         Z  
#> 304         ISEEDARR_SPPT       106         Z  
#> 307   ISEEDARRAY_SPP_CONV       106         Z  
#> 309    ISEEDARRAY_SPP_LSM       106         Z  
#> 308    ISEEDARRAY_SPP_PBL       106         Z  
#> 224                ISLTYP       106         XY 
#> 70                    iso       104         XYZ
#> 204             ITIMESTEP       106         0  
#> 223                IVGTYP       106         XY 
#> 64                    ket       104         XYZ
#> 153                 KN2O5       104         XYZ
#> 234                   LAI       104         XY 
#> 18            LAI_VEGMASK       104         XY 
#> 321              LAKEMASK       104         XY 
#> 320              LANDMASK       104         XY 
#> 298                    LH       104         XY 
#> 171              LH_FORCE       104         0  
#> 174         LH_FORCE_TEND       104         0  
#> 157              LU_INDEX       104         XY 
#> 247              MAPFAC_M       104         XY 
#> 250             MAPFAC_MX       104         XY 
#> 251             MAPFAC_MY       104         XY 
#> 248              MAPFAC_U       104         XY 
#> 252             MAPFAC_UX       104         XY 
#> 253             MAPFAC_UY       104         XY 
#> 249              MAPFAC_V       104         XY 
#> 254             MAPFAC_VX       104         XY 
#> 256             MAPFAC_VY       104         XY 
#> 270             MAX_MSTFX       104         0  
#> 271             MAX_MSTFY       104         0  
#> 243                 MAXMF       104         XY 
#> 255             MF_VX_INV       104         XY 
#> 66                   mgly       104         XYZ
#> 176                    MU       104         XY 
#> 177                   MUB       104         XY 
#> 47                   n2o5       104         XYZ
#> 81                   naai       104         XYZ
#> 80                   naaj       104         XYZ
#> 119                 nacwi       104         XYZ
#> 118                 nacwj       104         XYZ
#> 5                 NC_DIAG       104         XYZ
#> 178              NEST_POS       104         XY 
#> 46                    nh3       104         XYZ
#> 77                  nh4ai       104         XYZ
#> 76                  nh4aj       104         XYZ
#> 115                nh4cwi       104         XYZ
#> 114                nh4cwj       104         XYZ
#> 35                     no       104         XYZ
#> 34                    no2       104         XYZ
#> 48                    no3       104         XYZ
#> 79                  no3ai       104         XYZ
#> 78                  no3aj       104         XYZ
#> 117                no3cwi       104         XYZ
#> 116                no3cwj       104         XYZ
#> 291               NOAHRES       104         XY 
#> 109                   nu0       104         XYZ
#> 147                 nu0cw       104         XYZ
#> 242              NUPDRAFT       106         XY 
#> 36                     o3       104         XYZ
#> 55                    ol2       104         XYZ
#> 57                    oli       104         XYZ
#> 282                   OLR       104         XY 
#> 56                    olt       104         XYZ
#> 68                   onit       104         XYZ
#> 41                    op1       104         XYZ
#> 42                    op2       104         XYZ
#> 44                   ora1       104         XYZ
#> 45                   ora2       104         XYZ
#> 127            orgalk1cwi       104         XYZ
#> 126            orgalk1cwj       104         XYZ
#> 89               orgalk1i       104         XYZ
#> 88               orgalk1j       104         XYZ
#> 123            orgaro1cwi       104         XYZ
#> 122            orgaro1cwj       104         XYZ
#> 85               orgaro1i       104         XYZ
#> 84               orgaro1j       104         XYZ
#> 125            orgaro2cwi       104         XYZ
#> 124            orgaro2cwj       104         XYZ
#> 87               orgaro2i       104         XYZ
#> 86               orgaro2j       104         XYZ
#> 131             orgba1cwi       104         XYZ
#> 130             orgba1cwj       104         XYZ
#> 93                orgba1i       104         XYZ
#> 92                orgba1j       104         XYZ
#> 133             orgba2cwi       104         XYZ
#> 132             orgba2cwj       104         XYZ
#> 95                orgba2i       104         XYZ
#> 94                orgba2j       104         XYZ
#> 135             orgba3cwi       104         XYZ
#> 134             orgba3cwj       104         XYZ
#> 97                orgba3i       104         XYZ
#> 96                orgba3j       104         XYZ
#> 137             orgba4cwi       104         XYZ
#> 136             orgba4cwj       104         XYZ
#> 99                orgba4i       104         XYZ
#> 98                orgba4j       104         XYZ
#> 129            orgole1cwi       104         XYZ
#> 128            orgole1cwj       104         XYZ
#> 91               orgole1i       104         XYZ
#> 90               orgole1j       104         XYZ
#> 139              orgpacwi       104         XYZ
#> 138              orgpacwj       104         XYZ
#> 101                orgpai       104         XYZ
#> 100                orgpaj       104         XYZ
#> 179                     P       104         XYZ
#> 190                 P_HYD       104         XYZ
#> 269               P_STRAT       104         0  
#> 263                 P_TOP       104         0  
#> 265                   P00       104         0  
#> 143                p25cwi       104         XYZ
#> 142                p25cwj       104         XYZ
#> 105                  p25i       104         XYZ
#> 104                  p25j       104         XYZ
#> 43                    paa       104         XYZ
#> 49                    pan       104         XYZ
#> 180                    PB       104         XYZ
#> 295                  PBLH       104         XY 
#> 319                    PC       104         XY 
#> 318                   PCB       104         XY 
#> 166                    PH       104         XYZ
#> 167                   PHB       104         XYZ
#> 27               PHOTR201       104         XYZ
#> 28               PHOTR202       104         XYZ
#> 29               PHOTR203       104         XYZ
#> 26               PHOTR204       104         XYZ
#> 21                   PM10       104         XYZ
#> 20              PM2_5_DRY       104         XYZ
#> 194                  PSFC       104         XY 
#> 150                    PV       104         XYZ
#> 191                    Q2       104         XY 
#> 207                QCLOUD       104         XYZ
#> 297                   QFX       104         XY 
#> 211                QGRAUP       104         XYZ
#> 209                  QICE       104         XYZ
#> 235                   QKE       104         XYZ
#> 212                QNDROP       104         XYZ
#> 208                 QRAIN       104         XYZ
#> 210                 QSNOW       104         XYZ
#> 206                QVAPOR       104         XYZ
#> 272                 RAINC       104         XY 
#> 274                RAINNC       104         XY 
#> 7                RAINPROD       104         XYZ
#> 273                RAINSH       104         XY 
#> 184                   RDN       104         Z  
#> 183                  RDNW       104         Z  
#> 197                   RDX       104         0  
#> 198                   RDY       104         0  
#> 199                  RESM       104         0  
#> 10              ROUGH_COR       104         XY 
#> 31                    SAC       104         XYZ
#> 303   SAVE_TOPO_FROM_REAL       106         0  
#> 219                SEAICE       104         XY 
#> 107                  seas       104         XYZ
#> 145                seascw       104         XYZ
#> 221                SFROFF       104         XY 
#> 218                  SH2O       104         XYZ
#> 213                SHDMAX       104         XY 
#> 214                SHDMIN       104         XY 
#> 259              SINALPHA       104         XY 
#> 217                 SMOIS       104         XYZ
#> 11              SMOIS_COR       104         XY 
#> 215                SNOALB       104         XY 
#> 229                  SNOW       104         XY 
#> 301                 SNOWC       104         XY 
#> 230                 SNOWH       104         XY 
#> 275                SNOWNC       104         XY 
#> 30                    SNU       104         XYZ
#> 32                    so2       104         XYZ
#> 75                  so4ai       104         XYZ
#> 74                  so4aj       104         XYZ
#> 113                so4cwi       104         XYZ
#> 112                so4cwj       104         XYZ
#> 108                 soila       104         XYZ
#> 146                soilcw       104         XYZ
#> 302                    SR       104         XY 
#> 322                   SST       104         XY 
#> 323             SST_INPUT       104         XY 
#> 232                 SSTSK       104         XY 
#> 33                   sulf       104         XYZ
#> 279                SWDOWN       104         XY 
#> 281                SWNORM       104         XY 
#> 168                     T       104         XYZ
#> 264                   T00       104         0  
#> 192                    T2       104         XY 
#> 193                   TH2       104         XY 
#> 189  THIS_IS_AN_IDEAL_RUN       106         0  
#> 169                   THM       104         XYZ
#> 267                  TISO       104         0  
#> 245               TKE_PBL       104         XYZ
#> 266                   TLP       104         0  
#> 268             TLP_STRAT       104         0  
#> 292                   TMN       104         XY 
#> 58                    tol       104         XYZ
#> 61                   tpan       104         XYZ
#> 262                   TSK       104         XY 
#> 172             TSK_FORCE       104         0  
#> 175        TSK_FORCE_TEND       104         0  
#> 216                  TSLB       104         XYZ
#> 22                   TSOA       104         XYZ
#> 163                     U       104         XYZ
#> 195                   U10       104         XY 
#> 222                UDROFF       104         XY 
#> 294                   UST       104         XY 
#> 9                   UST_T       104         XY 
#> 164                     V       104         XYZ
#> 196                   V10       104         XY 
#> 244                   VAR       104         XY 
#> 162               VAR_SSO       104         XY 
#> 225                VEGFRA       104         XY 
#> 165                     W       104         XYZ
#> 15           WET_DEP_FLUX       104         XYZ
#> 220                 XICEM       104         XY 
#> 293                 XLAND       104         XY 
#> 155                  XLAT       104         XY 
#> 283                XLAT_U       104         XY 
#> 285                XLAT_V       104         XY 
#> 156                 XLONG       104         XY 
#> 284               XLONG_U       104         XY 
#> 286               XLONG_V       104         XY 
#> 205                 XTIME       104         0  
#> 59                    xyl       104         XYZ
#> 154                YCLNO2       104         XYZ
#> 200               ZETATOP       104         0  
#> 158                   ZNU       104         Z  
#> 159                   ZNW       104         Z  
#> 160                    ZS       104         Z  
#>                                                                            description
#> 110                                                           Accumulation mode number
#> 148                                                  Accumulation mode number in cloud
#> 227                                                       ACCUMULATED GROUND HEAT FLUX
#> 299                                        ACCUMULATED UPWARD HEAT FLUX AT THE SURFACE
#> 300                                 ACCUMULATED UPWARD LATENT HEAT FLUX AT THE SURFACE
#> 60                                                                   ACO3 mixing ratio
#> 228                                                            ACCUMULATED MELTED SNOW
#> 289                                                                  BACKGROUND ALBEDO
#> 287                                                                             ALBEDO
#> 39                                                                    ALD mixing ratio
#> 106                                                      Coarse anthropogenic aerosols
#> 144                                             Coarse anthropogenic aerosols in cloud
#> 1                                                                Aerosol Optical Depth
#> 2                                                            Aerosol Optical Depth, 2d
#> 24                                                                       asoa dry mass
#> 3                                                           Aerosol Optical Depth, top
#> 23                                                                       bsoa dry mass
#> 312                                         full levels, c1f = d bf / d eta, using znu
#> 310                                         half levels, c1h = d bf / d eta, using znw
#> 313                                                 full levels, c2f = (1-c1f)*(p0-pt)
#> 311                                                 half levels, c2h = (1-c1h)*(p0-pt)
#> 316                                                              full levels, c3f = bf
#> 314                                                              half levels, c3h = bh
#> 317                                  full levels, c4f = (eta-bf)*(p0-pt)+pt, using znw
#> 315                                  half levels, c4h = (eta-bh)*(p0-pt)+pt, using znu
#> 231                                                                       CANOPY WATER
#> 201                                                   2nd order extrapolation constant
#> 202                                                   2nd order extrapolation constant
#> 203                                                   2nd order extrapolation constant
#> 187                                                             extrapolation constant
#> 188                                                             extrapolation constant
#> 83                                                          Chloride conc. Aitken mode
#> 82                                                            Chloride conc. Acc. mode
#> 288                                     COMPUTATIONAL GRID LATITUDE, SOUTH IS NEGATIVE
#> 121                                               Chloride  conc. Aitken mode in cloud
#> 120                                                 Chloride  conc. Acc. mode in cloud
#> 278                                                                     CLOUD FRACTION
#> 6                                                                       CLOUD FRACTION
#> 152                                                                      n2o5 velocity
#> 54                                                                     CO mixing ratio
#> 111                                                                 Coarse mode number
#> 149                                                        Coarse mode number in cloud
#> 260                                                       Local cosine of map rotation
#> 233                                                          COS of SOLAR ZENITH ANGLE
#> 69                                                                    CSL mixing ratio
#> 67                                                                    DCB mixing ratio
#> 25                                                          dms oceanic concentrations
#> 186                                           d(eta) values between half (mass) levels
#> 185                                              d(eta) values between full (w) levels
#> 14                                                                 dry deposition flux
#> 13                                                             dry deposition velocity
#> 12                                                        dust dry deposition velocity
#> 19                                                              O3 deposition velocity
#> 161                                                         THICKNESSES OF SOIL LAYERS
#> 258                                                      Coriolis cosine latitude term
#> 17                                                                   Actual biog emiss
#> 16                                                                   Actual biog emiss
#> 141                                              Elemental carbon Aitken mode in cloud
#> 140                                                Elemental carbon Acc. mode in cloud
#> 103                                                       Elemental carbon Aitken mode
#> 102                                                         Elemental carbon Acc. mode
#> 236                                       EDMF relative updraft  area - moist updrafts
#> 240                                            EDMF entrainment  - mean moist updrafts
#> 241                                                      EDMF qc - mean moist updrafts
#> 239                                                     EDMF qt  - mean moist updrafts
#> 238                                                 EDMF thetaL  - mean moist updrafts
#> 237                                      EDMF vertical velocity  - mean moist updrafts
#> 246                                                              Length scale from PBL
#> 290                                                                 SURFACE EMISSIVITY
#> 53                                                                    ETH mixing ratio
#> 8                                                                RAIN EVAPORATION RATE
#> 257                                                        Coriolis sine latitude term
#> 181                                               upper weight for vertical stretching
#> 182                                               lower weight for vertical stretching
#> 151                                                             n2o5 uptake by aerosol
#> 280                                          DOWNWARD LONG WAVE FLUX AT GROUND SURFACE
#> 65                                                                    GLY mixing ratio
#> 276                                               ACCUMULATED TOTAL GRID SCALE GRAUPEL
#> 226                                                                   GROUND HEAT FLUX
#> 38                                                                   H2O2 mixing ratio
#> 277                                                  ACCUMULATED TOTAL GRID SCALE HAIL
#> 50                                                                    HC3 mixing ratio
#> 51                                                                    HC5 mixing ratio
#> 52                                                                    HC8 mixing ratio
#> 40                                                                   HCHO mixing ratio
#> 71                                                                    HCL mixing ratio
#> 296                                                    UPWARD HEAT FLUX AT THE SURFACE
#> 170                                               SCM ideal surface sensible heat flux
#> 173                                      SCM ideal surface sensible heat flux tendency
#> 261                                                                     Terrain Height
#> 37                                                                   HNO3 mixing ratio
#> 63                                                                   HNO4 mixing ratio
#> 72                                                                     HO mixing ratio
#> 73                                                                    HO2 mixing ratio
#> 62                                                                   HONO mixing ratio
#> 4                                                            Some chem thing, ICN_DIAG
#> 306                                          Array to hold seed for restart, RAND_PERT
#> 305                                              Array to hold seed for restart, SKEBS
#> 304                                               Array to hold seed for restart, SPPT
#> 307                                         Array to hold seed for restart, RAND_PERT2
#> 309                                         Array to hold seed for restart, RAND_PERT4
#> 308                                         Array to hold seed for restart, RAND_PERT3
#> 224                                                             DOMINANT SOIL CATEGORY
#> 70                                                                    ISO mixing ratio
#> 204                                                                                   
#> 223                                                       DOMINANT VEGETATION CATEGORY
#> 64                                                                    KET mixing ratio
#> 153                                                             n2o5 het reaction rate
#> 234                                                                    LEAF AREA INDEX
#> 18            MODIS LAI vegetation mask for this date; 0=no dust produced (vegetation)
#> 321                                                LAKE MASK (1 FOR LAND, 0 FOR WATER)
#> 320                                                LAND MASK (1 FOR LAND, 0 FOR WATER)
#> 298                                                    LATENT HEAT FLUX AT THE SURFACE
#> 171                                                 SCM ideal surface latent heat flux
#> 174                                        SCM ideal surface latent heat flux tendency
#> 157                                                                  LAND USE CATEGORY
#> 247                                                      Map scale factor on mass grid
#> 250                                         Map scale factor on mass grid, x direction
#> 251                                         Map scale factor on mass grid, y direction
#> 248                                                         Map scale factor on u-grid
#> 252                                            Map scale factor on u-grid, x direction
#> 253                                            Map scale factor on u-grid, y direction
#> 249                                                         Map scale factor on v-grid
#> 254                                            Map scale factor on v-grid, x direction
#> 256                                            Map scale factor on v-grid, y direction
#> 270                                                           Max map factor in domain
#> 271                                                           Max map factor in domain
#> 243                                       Maximum mass-flux (neg: all dry, pos: moist)
#> 255                                    Inverse map scale factor on v-grid, x direction
#> 66                                                                   MGLY mixing ratio
#> 176                                                perturbation dry air mass in column
#> 177                                                  base state dry air mass in column
#> 47                                                                   N2O5 mixing ratio
#> 81                                                          Sodium   conc. Aitken mode
#> 80                                                            Sodium   conc. Acc. mode
#> 119                                                 Sodium  conc. Aitken mode in cloud
#> 118                                                   Sodium  conc. Acc. mode in cloud
#> 5                                                             Some chem thing, NC_DIAG
#> 178                                                                                  -
#> 46                                                                    NH3 mixing ratio
#> 77                                                         Ammonium  conc. Aitken mode
#> 76                                                            Ammonium conc. Acc. mode
#> 115                                               Ammonium  conc. Aitken mode in cloud
#> 114                                                  Ammonium conc. Acc. mode in cloud
#> 35                                                                     NO mixing ratio
#> 34                                                                    NO2 mixing ratio
#> 48                                                                    NO3 mixing ratio
#> 79                                                          Nitrate  conc. Aitken mode
#> 78                                                            Nitrate  conc. Acc. mode
#> 117                                                Nitrate  conc. Aitken mode in cloud
#> 116                                                  Nitrate  conc. Acc. mode in cloud
#> 291                                         RESIDUAL OF THE NOAH SURFACE ENERGY BUDGET
#> 109                                                                 Aitken mode number
#> 147                                                        Aitken mode number in cloud
#> 242                                                   Number of updrafts per grid cell
#> 36                                                                     O3 mixing ratio
#> 55                                                                    OL2 mixing ratio
#> 57                                                                    OLI mixing ratio
#> 282                                                             TOA OUTGOING LONG WAVE
#> 56                                                                    OLT mixing ratio
#> 68                                                                   ONIT mixing ratio
#> 41                                                                    OP1 mixing ratio
#> 42                                                                    OP2 mixing ratio
#> 44                                                                   ORA1 mixing ratio
#> 45                                                                   ORA2 mixing ratio
#> 127 SOA Anth. org. conc. from alkanes and others except aromatics Aitken mode in cloud
#> 126   SOA Anth. org. conc. from alkanes and others except aromatics Acc. mode in cloud
#> 89           SOA Anth. org. conc. from alkanes and others except aromatics Aitken mode
#> 88             SOA Anth. org. conc. from alkanes and others except aromatics Acc. mode
#> 123                           SOA Anth. org. conc. from aromatics Aitken mode in cloud
#> 122                             SOA Anth. org. conc. from aromatics Acc. mode in cloud
#> 85                                     SOA Anth. org. conc. from aromatics Aitken mode
#> 84                                       SOA Anth. org. conc. from aromatics Acc. mode
#> 125                           SOA Anth. org. conc. from aromatics Aitken mode in cloud
#> 124                             SOA Anth. org. conc. from aromatics Acc. mode in cloud
#> 87                                     SOA Anth. org. conc. from aromatics Aitken mode
#> 86                                       SOA Anth. org. conc. from aromatics Acc. mode
#> 131                           SOA Biog. org. conc. from aromatics Aitken mode in cloud
#> 130                             SOA Biog. org. conc. from aromatics Acc. mode in cloud
#> 93                                     SOA Biog. org. conc. from aromatics Aitken mode
#> 92                                       SOA Biog. org. conc. from aromatics Acc. mode
#> 133                           SOA Biog. org. conc. from aromatics Aitken mode in cloud
#> 132                             SOA Biog. org. conc. from aromatics Acc. mode in cloud
#> 95                                     SOA Biog. org. conc. from aromatics Aitken mode
#> 94                                       SOA Biog. org. conc. from aromatics Acc. mode
#> 135                           SOA Biog. org. conc. from aromatics Aitken mode in cloud
#> 134                             SOA Biog. org. conc. from aromatics Acc. mode in cloud
#> 97                                     SOA Biog. org. conc. from aromatics Aitken mode
#> 96                                       SOA Biog. org. conc. from aromatics Acc. mode
#> 137                           SOA Biog. org. conc. from aromatics Aitken mode in cloud
#> 136                             SOA Biog. org. conc. from aromatics Acc. mode in cloud
#> 99                                     SOA Biog. org. conc. from aromatics Aitken mode
#> 98                                       SOA Biog. org. conc. from aromatics Acc. mode
#> 129 SOA Anth. org. conc. from alkenes and others except aromatics Aitken mode in cloud
#> 128   SOA Anth. org. conc. from alkenes and others except aromatics Acc. mode in cloud
#> 91           SOA Anth. org. conc. from alkenes and others except aromatics Aitken mode
#> 90             SOA Anth. org. conc. from alkenes and others except aromatics Acc. mode
#> 139                         Prim. anth. org. conc. from aromatics Aitken mode in cloud
#> 138                           Prim. anth. org. conc. from aromatics Acc. mode in cloud
#> 101                                  Prim. anth. org. conc. from aromatics Aitken mode
#> 100                                    Prim. anth. org. conc. from aromatics Acc. mode
#> 179                                                              perturbation pressure
#> 190                                                               hydrostatic pressure
#> 269                                      BASE STATE PRESSURE AT BOTTOM OF STRATOSPHERE
#> 263                                                          PRESSURE TOP OF THE MODEL
#> 265                                                                 BASE STATE PRESURE
#> 143                                                 Primary PM2.5 Aitken mode in cloud
#> 142                                                   Primary PM2.5 Acc. mode in cloud
#> 105                                                          Primary PM2.5 Aitken mode
#> 104                                                            Primary PM2.5 Acc. mode
#> 43                                                                    PAA mixing ratio
#> 49                                                                    PAN mixing ratio
#> 180                                                                BASE STATE PRESSURE
#> 295                                                                         PBL HEIGHT
#> 319                                                perturbation dry air mass in column
#> 318                                                  base state dry air mass in column
#> 166                                                          perturbation geopotential
#> 167                                                            base-state geopotential
#> 27                                                                 cl2 photolysis rate
#> 28                                                                hocl photolysis rate
#> 29                                                                fmcl photolysis rate
#> 26                                                               CLNO2 Photolysis Rate
#> 21                                                                       pm10 dry mass
#> 20                                                              pm2.5 aerosol dry mass
#> 194                                                                       SFC PRESSURE
#> 150                                                                Potential Vorticity
#> 191                                                                          QV at 2 M
#> 207                                                           Cloud water mixing ratio
#> 297                                                UPWARD MOISTURE FLUX AT THE SURFACE
#> 211                                                               Graupel mixing ratio
#> 209                                                                   Ice mixing ratio
#> 235                                                                twice TKE from MYNN
#> 212                                                        Droplet number mixing ratio
#> 208                                                            Rain water mixing ratio
#> 210                                                                  Snow mixing ratio
#> 206                                                           Water vapor mixing ratio
#> 272                                            ACCUMULATED TOTAL CUMULUS PRECIPITATION
#> 274                                         ACCUMULATED TOTAL GRID SCALE PRECIPITATION
#> 7                                                           TOTAL RAIN PRODUCTION RATE
#> 273                                          ACCUMULATED SHALLOW CUMULUS PRECIPITATION
#> 184                                   inverse d(eta) values between half (mass) levels
#> 183                                      inverse d(eta) values between full (w) levels
#> 197                                                              INVERSE X GRID LENGTH
#> 198                                                              INVERSE Y GRID LENGTH
#> 199                                               TIME WEIGHT CONSTANT FOR SMALL STEPS
#> 10                                                       roughness elements correction
#> 31                                                              2nd moment Aitken mode
#> 303                                   1=original topo from real/0=topo modified by WRF
#> 219                                                                       SEA ICE FLAG
#> 107                                                             Coarse marine aerosols
#> 145                                                    Coarse marine aerosols in cloud
#> 221                                                                     SURFACE RUNOFF
#> 218                                                                  SOIL LIQUID WATER
#> 213                                                            ANNUAL MAX VEG FRACTION
#> 214                                                            ANNUAL MIN VEG FRACTION
#> 259                                                         Local sine of map rotation
#> 217                                                                      SOIL MOISTURE
#> 11                                                            soil moisture correction
#> 215                                                 ANNUAL MAX SNOW ALBEDO IN FRACTION
#> 229                                                              SNOW WATER EQUIVALENT
#> 301                                   FLAG INDICATING SNOW COVERAGE (1 FOR SNOW COVER)
#> 230                                                                PHYSICAL SNOW DEPTH
#> 275                                          ACCUMULATED TOTAL GRID SCALE SNOW AND ICE
#> 30                                                              2nd moment Aitken mode
#> 32                                                                    SO2 mixing ratio
#> 75                                                           Sulfate conc. Aitken mode
#> 74                                                             Sulfate conc. Acc. mode
#> 113                                                 Sulfate conc. Aitken mode in cloud
#> 112                                                   Sulfate conc. Acc. mode in cloud
#> 108                                                       Coarse soil-derived aerosols
#> 146                                              Coarse soil-derived aerosols in cloud
#> 302                                                   fraction of frozen precipitation
#> 322                                                            SEA SURFACE TEMPERATURE
#> 323                                      SEA SURFACE TEMPERATURE FROM WRFLOWINPUT FILE
#> 232                                                       SKIN SEA SURFACE TEMPERATURE
#> 33                                                                   SULF mixing ratio
#> 279                                         DOWNWARD SHORT WAVE FLUX AT GROUND SURFACE
#> 281                         NORMAL SHORT WAVE FLUX AT GROUND SURFACE (SLOPE-DEPENDENT)
#> 168                                        perturbation potential temperature theta-t0
#> 264                                                             BASE STATE TEMPERATURE
#> 192                                                                        TEMP at 2 M
#> 193                                                                    POT TEMP at 2 M
#> 189                                          T/F flag: this is an ARW ideal simulation
#> 169   either 1) pert moist pot temp=(1+Rv/Rd Qv)*(theta)-T0, or 2) pert dry pot temp=t
#> 267                                               TEMP AT WHICH THE BASE T TURNS CONST
#> 245                                                                       TKE from PBL
#> 266                                                              BASE STATE LAPSE RATE
#> 268                                 BASE STATE LAPSE RATE (DT/D(LN(P)) IN STRATOSPHERE
#> 292                                                 SOIL TEMPERATURE AT LOWER BOUNDARY
#> 58                                                                    TOL mixing ratio
#> 61                                                                   TPAN mixing ratio
#> 262                                                           SURFACE SKIN TEMPERATURE
#> 172                                                 SCM ideal surface skin temperature
#> 175                                        SCM ideal surface skin temperature tendency
#> 216                                                                   SOIL TEMPERATURE
#> 22                                                                        soa dry mass
#> 163                                                                   x-wind component
#> 195                                                                          U at 10 M
#> 222                                                                 UNDERGROUND RUNOFF
#> 294                                                            U* IN SIMILARITY THEORY
#> 9                                                          Threshold Friction Velocity
#> 164                                                                   y-wind component
#> 196                                                                          V at 10 M
#> 244                                                                OROGRAPHIC VARIANCE
#> 162                                                variance of subgrid-scale orography
#> 225                                                                VEGETATION FRACTION
#> 165                                                                   z-wind component
#> 15                                                           column wet scavening flux
#> 220                                                       SEA ICE FLAG (PREVIOUS STEP)
#> 293                                                LAND MASK (1 FOR LAND, 2 FOR WATER)
#> 155                                                        LATITUDE, SOUTH IS NEGATIVE
#> 283                                                        LATITUDE, SOUTH IS NEGATIVE
#> 285                                                        LATITUDE, SOUTH IS NEGATIVE
#> 156                                                        LONGITUDE, WEST IS NEGATIVE
#> 284                                                        LONGITUDE, WEST IS NEGATIVE
#> 286                                                        LONGITUDE, WEST IS NEGATIVE
#> 205                                                  minutes since 2014-10-25 00:00:00
#> 59                                                                    XYL mixing ratio
#> 154                                                          clno2 yield from n2o5 het
#> 200                                                                  ZETA AT MODEL TOP
#> 158                                                   eta values on half (mass) levels
#> 159                                                      eta values on full (w) levels
#> 160                                                   DEPTHS OF CENTERS OF SOIL LAYERS
#>                                 units stagger          coordinates
#> 110                        /kg-dryair             XLONG XLAT XTIME
#> 148                        /kg-dryair             XLONG XLAT XTIME
#> 227                             J m-2             XLONG XLAT XTIME
#> 299                             J m-2             XLONG XLAT XTIME
#> 300                             J m-2             XLONG XLAT XTIME
#> 60                               ppmv             XLONG XLAT XTIME
#> 228                            kg m-2             XLONG XLAT XTIME
#> 289                                               XLONG XLAT XTIME
#> 287                                 -             XLONG XLAT XTIME
#> 39                               ppmv             XLONG XLAT XTIME
#> 106                      ug/kg-dryair             XLONG XLAT XTIME
#> 144                      ug/kg-dryair             XLONG XLAT XTIME
#> 1                                                 XLONG XLAT XTIME
#> 2                                                 XLONG XLAT XTIME
#> 24                            ug m^-3             XLONG XLAT XTIME
#> 3                                                 XLONG XLAT XTIME
#> 23                            ug m^-3             XLONG XLAT XTIME
#> 312                     Dimensionless       Z                  104
#> 310                     Dimensionless                          104
#> 313                                Pa       Z                  104
#> 311                                Pa                          104
#> 316                     Dimensionless       Z                  104
#> 314                     Dimensionless                          104
#> 317                                Pa       Z                  104
#> 315                                Pa                          104
#> 231                            kg m-2             XLONG XLAT XTIME
#> 201                                                            104
#> 202                                                            104
#> 203                                                            104
#> 187                                                            104
#> 188                                                            104
#> 83                       ug/kg-dryair             XLONG XLAT XTIME
#> 82                       ug/kg-dryair             XLONG XLAT XTIME
#> 288                      degree_north             XLONG XLAT XTIME
#> 121                      ug/kg-dryair             XLONG XLAT XTIME
#> 120                      ug/kg-dryair             XLONG XLAT XTIME
#> 278                                               XLONG XLAT XTIME
#> 6                                   -             XLONG XLAT XTIME
#> 152                               m/s             XLONG XLAT XTIME
#> 54                               ppmv             XLONG XLAT XTIME
#> 111                        /kg-dryair             XLONG XLAT XTIME
#> 149                        /kg-dryair             XLONG XLAT XTIME
#> 260                                               XLONG XLAT XTIME
#> 233                     dimensionless             XLONG XLAT XTIME
#> 69                               ppmv             XLONG XLAT XTIME
#> 67                               ppmv             XLONG XLAT XTIME
#> 25                               nM/L             XLONG XLAT XTIME
#> 186                                                            104
#> 185                                                            104
#> 14                     mol or ug m^-2       Z     XLONG XLAT XTIME
#> 13                               cm/s       Z     XLONG XLAT XTIME
#> 12                                m/s             XLONG XLAT XTIME
#> 19                               cm/s             XLONG XLAT XTIME
#> 161                                 m       Z                  104
#> 258                               s-1             XLONG XLAT XTIME
#> 17                    mol km^-2 hr^-1             XLONG XLAT XTIME
#> 16                    mol km^-2 hr^-1             XLONG XLAT XTIME
#> 141                      ug/kg-dryair             XLONG XLAT XTIME
#> 140                      ug/kg-dryair             XLONG XLAT XTIME
#> 103                      ug/kg-dryair             XLONG XLAT XTIME
#> 102                      ug/kg-dryair             XLONG XLAT XTIME
#> 236                                 -             XLONG XLAT XTIME
#> 240                               m-1             XLONG XLAT XTIME
#> 241                           kg kg-1             XLONG XLAT XTIME
#> 239                           kg kg-1             XLONG XLAT XTIME
#> 238                                 K             XLONG XLAT XTIME
#> 237                             m s-1             XLONG XLAT XTIME
#> 246                                 m       Z     XLONG XLAT XTIME
#> 290                                               XLONG XLAT XTIME
#> 53                               ppmv             XLONG XLAT XTIME
#> 8                                 s-1             XLONG XLAT XTIME
#> 257                               s-1             XLONG XLAT XTIME
#> 181                                                            104
#> 182                                                            104
#> 151                   numerical value             XLONG XLAT XTIME
#> 280                             W m-2             XLONG XLAT XTIME
#> 65                               ppmv             XLONG XLAT XTIME
#> 276                                mm             XLONG XLAT XTIME
#> 226                             W m-2             XLONG XLAT XTIME
#> 38                               ppmv             XLONG XLAT XTIME
#> 277                                mm             XLONG XLAT XTIME
#> 50                               ppmv             XLONG XLAT XTIME
#> 51                               ppmv             XLONG XLAT XTIME
#> 52                               ppmv             XLONG XLAT XTIME
#> 40                               ppmv             XLONG XLAT XTIME
#> 71                               ppmv             XLONG XLAT XTIME
#> 296                             W m-2             XLONG XLAT XTIME
#> 170                             W m-2                          104
#> 173                         W m-2 s-1                          104
#> 261                                 m             XLONG XLAT XTIME
#> 37                               ppmv             XLONG XLAT XTIME
#> 63                               ppmv             XLONG XLAT XTIME
#> 72                               ppmv             XLONG XLAT XTIME
#> 73                               ppmv             XLONG XLAT XTIME
#> 62                               ppmv             XLONG XLAT XTIME
#> 4                                                 XLONG XLAT XTIME
#> 306                                         Z                  106
#> 305                                         Z                  106
#> 304                                         Z                  106
#> 307                                         Z                  106
#> 309                                         Z                  106
#> 308                                         Z                  106
#> 224                                               XLONG XLAT XTIME
#> 70                               ppmv             XLONG XLAT XTIME
#> 204                                                            106
#> 223                                               XLONG XLAT XTIME
#> 64                               ppmv             XLONG XLAT XTIME
#> 153                               s-1             XLONG XLAT XTIME
#> 234                           m-2/m-2             XLONG XLAT XTIME
#> 18                               none             XLONG XLAT XTIME
#> 321                                               XLONG XLAT XTIME
#> 320                                               XLONG XLAT XTIME
#> 298                             W m-2             XLONG XLAT XTIME
#> 171                             W m-2                          104
#> 174                         W m-2 s-1                          104
#> 157                                               XLONG XLAT XTIME
#> 247                                               XLONG XLAT XTIME
#> 250                                               XLONG XLAT XTIME
#> 251                                               XLONG XLAT XTIME
#> 248                                         X XLONG_U XLAT_U XTIME
#> 252                                         X XLONG_U XLAT_U XTIME
#> 253                                         X XLONG_U XLAT_U XTIME
#> 249                                         Y XLONG_V XLAT_V XTIME
#> 254                                         Y XLONG_V XLAT_V XTIME
#> 256                                         Y XLONG_V XLAT_V XTIME
#> 270                                                            104
#> 271                                                            104
#> 243                        m/s * area             XLONG XLAT XTIME
#> 255                                         Y XLONG_V XLAT_V XTIME
#> 66                               ppmv             XLONG XLAT XTIME
#> 176                                Pa             XLONG XLAT XTIME
#> 177                                Pa             XLONG XLAT XTIME
#> 47                               ppmv             XLONG XLAT XTIME
#> 81                       ug/kg-dryair             XLONG XLAT XTIME
#> 80                       ug/kg-dryair             XLONG XLAT XTIME
#> 119                      ug/kg-dryair             XLONG XLAT XTIME
#> 118                      ug/kg-dryair             XLONG XLAT XTIME
#> 5                                                 XLONG XLAT XTIME
#> 178                                 -             XLONG XLAT XTIME
#> 46                               ppmv             XLONG XLAT XTIME
#> 77                       ug/kg-dryair             XLONG XLAT XTIME
#> 76                       ug/kg-dryair             XLONG XLAT XTIME
#> 115                      ug/kg-dryair             XLONG XLAT XTIME
#> 114                      ug/kg-dryair             XLONG XLAT XTIME
#> 35                               ppmv             XLONG XLAT XTIME
#> 34                               ppmv             XLONG XLAT XTIME
#> 48                               ppmv             XLONG XLAT XTIME
#> 79                       ug/kg-dryair             XLONG XLAT XTIME
#> 78                       ug/kg-dryair             XLONG XLAT XTIME
#> 117                      ug/kg-dryair             XLONG XLAT XTIME
#> 116                      ug/kg-dryair             XLONG XLAT XTIME
#> 291                           W m{-2}             XLONG XLAT XTIME
#> 109                        /kg-dryair             XLONG XLAT XTIME
#> 147                        /kg-dryair             XLONG XLAT XTIME
#> 242                                               XLONG XLAT XTIME
#> 36                               ppmv             XLONG XLAT XTIME
#> 55                               ppmv             XLONG XLAT XTIME
#> 57                               ppmv             XLONG XLAT XTIME
#> 282                             W m-2             XLONG XLAT XTIME
#> 56                               ppmv             XLONG XLAT XTIME
#> 68                               ppmv             XLONG XLAT XTIME
#> 41                               ppmv             XLONG XLAT XTIME
#> 42                               ppmv             XLONG XLAT XTIME
#> 44                               ppmv             XLONG XLAT XTIME
#> 45                               ppmv             XLONG XLAT XTIME
#> 127                      ug/kg-dryair             XLONG XLAT XTIME
#> 126                      ug/kg-dryair             XLONG XLAT XTIME
#> 89                       ug/kg-dryair             XLONG XLAT XTIME
#> 88                       ug/kg-dryair             XLONG XLAT XTIME
#> 123                      ug/kg-dryair             XLONG XLAT XTIME
#> 122                      ug/kg-dryair             XLONG XLAT XTIME
#> 85                       ug/kg-dryair             XLONG XLAT XTIME
#> 84                       ug/kg-dryair             XLONG XLAT XTIME
#> 125                      ug/kg-dryair             XLONG XLAT XTIME
#> 124                      ug/kg-dryair             XLONG XLAT XTIME
#> 87                       ug/kg-dryair             XLONG XLAT XTIME
#> 86                       ug/kg-dryair             XLONG XLAT XTIME
#> 131                      ug/kg-dryair             XLONG XLAT XTIME
#> 130                      ug/kg-dryair             XLONG XLAT XTIME
#> 93                       ug/kg-dryair             XLONG XLAT XTIME
#> 92                       ug/kg-dryair             XLONG XLAT XTIME
#> 133                      ug/kg-dryair             XLONG XLAT XTIME
#> 132                      ug/kg-dryair             XLONG XLAT XTIME
#> 95                       ug/kg-dryair             XLONG XLAT XTIME
#> 94                       ug/kg-dryair             XLONG XLAT XTIME
#> 135                      ug/kg-dryair             XLONG XLAT XTIME
#> 134                      ug/kg-dryair             XLONG XLAT XTIME
#> 97                       ug/kg-dryair             XLONG XLAT XTIME
#> 96                       ug/kg-dryair             XLONG XLAT XTIME
#> 137                      ug/kg-dryair             XLONG XLAT XTIME
#> 136                      ug/kg-dryair             XLONG XLAT XTIME
#> 99                       ug/kg-dryair             XLONG XLAT XTIME
#> 98                       ug/kg-dryair             XLONG XLAT XTIME
#> 129                      ug/kg-dryair             XLONG XLAT XTIME
#> 128                      ug/kg-dryair             XLONG XLAT XTIME
#> 91                       ug/kg-dryair             XLONG XLAT XTIME
#> 90                       ug/kg-dryair             XLONG XLAT XTIME
#> 139                      ug/kg-dryair             XLONG XLAT XTIME
#> 138                      ug/kg-dryair             XLONG XLAT XTIME
#> 101                      ug/kg-dryair             XLONG XLAT XTIME
#> 100                      ug/kg-dryair             XLONG XLAT XTIME
#> 179                                Pa             XLONG XLAT XTIME
#> 190                                Pa             XLONG XLAT XTIME
#> 269                                Pa                          104
#> 263                                Pa                          104
#> 265                                Pa                          104
#> 143                      ug/kg-dryair             XLONG XLAT XTIME
#> 142                      ug/kg-dryair             XLONG XLAT XTIME
#> 105                      ug/kg-dryair             XLONG XLAT XTIME
#> 104                      ug/kg-dryair             XLONG XLAT XTIME
#> 43                               ppmv             XLONG XLAT XTIME
#> 49                               ppmv             XLONG XLAT XTIME
#> 180                                Pa             XLONG XLAT XTIME
#> 295                                 m             XLONG XLAT XTIME
#> 319                                Pa             XLONG XLAT XTIME
#> 318                                Pa             XLONG XLAT XTIME
#> 166                            m2 s-2       Z     XLONG XLAT XTIME
#> 167                            m2 s-2       Z     XLONG XLAT XTIME
#> 27                            min{-1}             XLONG XLAT XTIME
#> 28                            min{-1}             XLONG XLAT XTIME
#> 29                            min{-1}             XLONG XLAT XTIME
#> 26                            min{-1}             XLONG XLAT XTIME
#> 21                            ug m^-3             XLONG XLAT XTIME
#> 20                            ug m^-3             XLONG XLAT XTIME
#> 194                                Pa             XLONG XLAT XTIME
#> 150                               pvu             XLONG XLAT XTIME
#> 191                           kg kg-1             XLONG XLAT XTIME
#> 207                           kg kg-1             XLONG XLAT XTIME
#> 297                        kg m-2 s-1             XLONG XLAT XTIME
#> 211                           kg kg-1             XLONG XLAT XTIME
#> 209                           kg kg-1             XLONG XLAT XTIME
#> 235                            m2 s-2             XLONG XLAT XTIME
#> 212                              kg-1             XLONG XLAT XTIME
#> 208                           kg kg-1             XLONG XLAT XTIME
#> 210                           kg kg-1             XLONG XLAT XTIME
#> 206                           kg kg-1             XLONG XLAT XTIME
#> 272                                mm             XLONG XLAT XTIME
#> 274                                mm             XLONG XLAT XTIME
#> 7                                 s-1             XLONG XLAT XTIME
#> 273                                mm             XLONG XLAT XTIME
#> 184                                                            104
#> 183                                                            104
#> 197                                                            104
#> 198                                                            104
#> 199                                                            104
#> 10                                                XLONG XLAT XTIME
#> 31                             m2 m-3             XLONG XLAT XTIME
#> 303                              flag                          106
#> 219                                               XLONG XLAT XTIME
#> 107                      ug/kg-dryair             XLONG XLAT XTIME
#> 145                      ug/kg-dryair             XLONG XLAT XTIME
#> 221                                mm             XLONG XLAT XTIME
#> 218                            m3 m-3       Z     XLONG XLAT XTIME
#> 213                                               XLONG XLAT XTIME
#> 214                                               XLONG XLAT XTIME
#> 259                                               XLONG XLAT XTIME
#> 217                            m3 m-3       Z     XLONG XLAT XTIME
#> 11                                                XLONG XLAT XTIME
#> 215                                               XLONG XLAT XTIME
#> 229                            kg m-2             XLONG XLAT XTIME
#> 301                                               XLONG XLAT XTIME
#> 230                                 m             XLONG XLAT XTIME
#> 275                                mm             XLONG XLAT XTIME
#> 30                             m2 m-3             XLONG XLAT XTIME
#> 32                               ppmv             XLONG XLAT XTIME
#> 75                       ug/kg-dryair             XLONG XLAT XTIME
#> 74                       ug/kg-dryair             XLONG XLAT XTIME
#> 113                      ug/kg-dryair             XLONG XLAT XTIME
#> 112                      ug/kg-dryair             XLONG XLAT XTIME
#> 108                      ug/kg-dryair             XLONG XLAT XTIME
#> 146                      ug/kg-dryair             XLONG XLAT XTIME
#> 302                                 -             XLONG XLAT XTIME
#> 322                                 K             XLONG XLAT XTIME
#> 323                                 K             XLONG XLAT XTIME
#> 232                                 K             XLONG XLAT XTIME
#> 33                               ppmv             XLONG XLAT XTIME
#> 279                             W m-2             XLONG XLAT XTIME
#> 281                             W m-2             XLONG XLAT XTIME
#> 168                                 K             XLONG XLAT XTIME
#> 264                                 K                          104
#> 192                                 K             XLONG XLAT XTIME
#> 193                                 K             XLONG XLAT XTIME
#> 189                                 -                          106
#> 169                                 K             XLONG XLAT XTIME
#> 267                                 K                          104
#> 245                            m2 s-2       Z     XLONG XLAT XTIME
#> 266                                                            104
#> 268                                 K                          104
#> 292                                 K             XLONG XLAT XTIME
#> 58                               ppmv             XLONG XLAT XTIME
#> 61                               ppmv             XLONG XLAT XTIME
#> 262                                 K             XLONG XLAT XTIME
#> 172                             W m-2                          104
#> 175                         W m-2 s-1                          104
#> 216                                 K       Z     XLONG XLAT XTIME
#> 22                            ug m^-3             XLONG XLAT XTIME
#> 163                             m s-1       X XLONG_U XLAT_U XTIME
#> 195                             m s-1             XLONG XLAT XTIME
#> 222                                mm             XLONG XLAT XTIME
#> 294                             m s-1             XLONG XLAT XTIME
#> 9                               m s-1             XLONG XLAT XTIME
#> 164                             m s-1       Y XLONG_V XLAT_V XTIME
#> 196                             m s-1             XLONG XLAT XTIME
#> 244                                               XLONG XLAT XTIME
#> 162                                m2             XLONG XLAT XTIME
#> 225                                               XLONG XLAT XTIME
#> 165                             m s-1       Z     XLONG XLAT XTIME
#> 15                    mmol or ug m^-2       Z     XLONG XLAT XTIME
#> 220                                               XLONG XLAT XTIME
#> 293                                               XLONG XLAT XTIME
#> 155                      degree_north                   XLONG XLAT
#> 283                      degree_north       X       XLONG_U XLAT_U
#> 285                      degree_north       Y       XLONG_V XLAT_V
#> 156                       degree_east                   XLONG XLAT
#> 284                       degree_east       X       XLONG_U XLAT_U
#> 286                       degree_east       Y       XLONG_V XLAT_V
#> 205 minutes since 2014-10-25 00:00:00                          104
#> 59                               ppmv             XLONG XLAT XTIME
#> 154                   numerical value             XLONG XLAT XTIME
#> 200                                                            104
#> 158                                                            104
#> 159                                         Z                  104
#> 160                                 m       Z                  104

Now we can select some variables

(vars <- dt[dt$MemoryOrder == "XYZ", ]$vars)
#>   [1] "ac0"          "ac0cw"        "aco3"         "ald"          "antha"       
#>   [6] "anthcw"       "AOD_OUT"      "ASOA"         "BSOA"         "clai"        
#>  [11] "claj"         "clcwi"        "clcwj"        "CLDFRA"       "CLDFRA2"     
#>  [16] "CN2O5"        "co"           "corn"         "corncw"       "csl"         
#>  [21] "dcb"          "DRY_DEP_FLUX" "DRY_DEP_LEN"  "dvel_o3"      "eccwi"       
#>  [26] "eccwj"        "eci"          "ecj"          "EDMF_A"       "EDMF_ENT"    
#>  [31] "EDMF_QC"      "EDMF_QT"      "EDMF_THL"     "EDMF_W"       "EL_PBL"      
#>  [36] "eth"          "EVAPPROD"     "GAMN2O5"      "gly"          "h2o2"        
#>  [41] "hc3"          "hc5"          "hc8"          "hcho"         "hcl"         
#>  [46] "hno3"         "hno4"         "ho"           "ho2"          "hono"        
#>  [51] "ICN_DIAG"     "iso"          "ket"          "KN2O5"        "mgly"        
#>  [56] "n2o5"         "naai"         "naaj"         "nacwi"        "nacwj"       
#>  [61] "NC_DIAG"      "nh3"          "nh4ai"        "nh4aj"        "nh4cwi"      
#>  [66] "nh4cwj"       "no"           "no2"          "no3"          "no3ai"       
#>  [71] "no3aj"        "no3cwi"       "no3cwj"       "nu0"          "nu0cw"       
#>  [76] "o3"           "ol2"          "oli"          "olt"          "onit"        
#>  [81] "op1"          "op2"          "ora1"         "ora2"         "orgalk1cwi"  
#>  [86] "orgalk1cwj"   "orgalk1i"     "orgalk1j"     "orgaro1cwi"   "orgaro1cwj"  
#>  [91] "orgaro1i"     "orgaro1j"     "orgaro2cwi"   "orgaro2cwj"   "orgaro2i"    
#>  [96] "orgaro2j"     "orgba1cwi"    "orgba1cwj"    "orgba1i"      "orgba1j"     
#> [101] "orgba2cwi"    "orgba2cwj"    "orgba2i"      "orgba2j"      "orgba3cwi"   
#> [106] "orgba3cwj"    "orgba3i"      "orgba3j"      "orgba4cwi"    "orgba4cwj"   
#> [111] "orgba4i"      "orgba4j"      "orgole1cwi"   "orgole1cwj"   "orgole1i"    
#> [116] "orgole1j"     "orgpacwi"     "orgpacwj"     "orgpai"       "orgpaj"      
#> [121] "P"            "P_HYD"        "p25cwi"       "p25cwj"       "p25i"        
#> [126] "p25j"         "paa"          "pan"          "PB"           "PH"          
#> [131] "PHB"          "PHOTR201"     "PHOTR202"     "PHOTR203"     "PHOTR204"    
#> [136] "PM10"         "PM2_5_DRY"    "PV"           "QCLOUD"       "QGRAUP"      
#> [141] "QICE"         "QKE"          "QNDROP"       "QRAIN"        "QSNOW"       
#> [146] "QVAPOR"       "RAINPROD"     "SAC"          "seas"         "seascw"      
#> [151] "SH2O"         "SMOIS"        "SNU"          "so2"          "so4ai"       
#> [156] "so4aj"        "so4cwi"       "so4cwj"       "soila"        "soilcw"      
#> [161] "sulf"         "T"            "THM"          "TKE_PBL"      "tol"         
#> [166] "tpan"         "TSLB"         "TSOA"         "U"            "V"           
#> [171] "W"            "WET_DEP_FLUX" "xyl"          "YCLNO2"

Now get some statistics

wrf_summary(wrfo, c("o3", "PM2_5_DRY", "T", "U", "V"))
#> 
  |                                                                            
  |                                                                      |   0%
  |                                                                            
  |==============                                                        |  20%
  |                                                                            
  |============================                                          |  40%
  |                                                                            
  |==========================================                            |  60%
  |                                                                            
  |========================================================              |  80%
  |                                                                            
  |======================================================================| 100%
#>                    Min.       1st Qu.       Median        Mean     3rd Qu.
#> o3         1.000000e-16  0.0001494586  0.003905759  0.00645222  0.01011842
#> PM2_5_DRY  1.000149e-04  0.0001599413  0.012459201  0.13730251  0.05450001
#> T         -7.659851e+00  6.2148132324 22.712966919 34.82713373 49.47671509
#> U         -2.072658e+01 -2.2874763012  1.582949162  2.71344012  6.05402517
#> V         -1.938167e+01 -3.7864468098 -0.764581144  0.10207729  2.48909324
#>                   Max.          sum
#> o3          0.08323991     37102.53
#> PM2_5_DRY  72.09506989    789537.79
#> T         178.68499756 200268278.11
#> U          32.16123199  15782583.34
#> V          27.93202972    594227.03